# ICS2O Grade 10 Computer Science – Printing “Triangle” Letters

Full source available below.

This note is to answer a common beginners computer science question:

“Write a program to print out a word in a triangle of different sorts”

I’ve created C++ code to print out an input phrase in various ways. C++ code can easily be ported over to Java, VBA, or Python code.

# 1) Print in left right angle

```N
NO
NOT
NOTE
NOTES```

Code:

```void leftAngle(string phrase) {
for (int x = 0; x < phrase.length()+1; ++x) {
cout << phrase[y];
}
cout << endl;
}
}

```

# 2) Print in right right angle

```    S
ES
TES
OTES
NOTES```

Code:

```void rightAngle(string phrase) {
int spaceLength = (int)phrase.length();
int wordIndex = (int)phrase.length();
for (int x = 0; x < phrase.length(); ++x) {
for (int y = spaceLength; y > 0; --y) {
cout << " ";
}
for (int y = wordIndex; y < phrase.length(); ++y) {
cout << phrase[y];
}
--spaceLength;
--wordLength;
cout << endl;
}
}```

3) Print Equilateral Triangle

```    N
N O
N O T
N O T E
N O T E S```

Code

```void equilateralAngle(string phrase) {
int numberOfSpaces = (int)phrase.length()-1;
int wordLength = 1;
for (int x = 0; x < phrase.length(); ++x) {
for (int y = 0; y < numberOfSpaces; ++y) {
cout << " ";
for (int y = 0; y < wordLength; ++y) {
cout << phrase[y] << " ";
}
cout << endl;
++wordLength;
--numberOfSpaces;
}
}
```